Screen-brush.



No. 783,266e PATENTED FEB. 2l, 1905.

J. HARRIS. v

SCREEN BRUSH.

.APPLICATION FILED 007.215.1904.

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@siren STATES PATENT Patented February 21, 1905.

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SCREEN-BRUSH.

SPECIFICATION forming part of Letters Patent No. 783,266, dated February21, 1905.

Application filed October 15, 1904. Serial No. 228',527. i

To @ZZ whom it ina/y concern,.-

Be it known that I, JONATHAN HARRIS, a citizen of the United States, anda resident of Cleveland, county of Cuyahoga, State of Ohio, haveinvented certain new and useful Improvements in Screen-Brushes, of whichI hereby declare-the following to be a full, clear, and exactdescription, such as. will enable others skilled in the art to which itappertains to make and use the same.

The invention has reference to traveling brushes for cleansing the wirescreens in a seedcleaning or otheranalogous device; and the objects ofthe invention are to provide means for obtaining increased efficiencyand practicability in the action of the brushes, and thereby moreperfectly cleanse the screen of refuse matters collected in the openingsthereof, so that they may be discharged into the proper receptacles.

The invention consists in longitudinallytraveling brushes in lieu of thetransverselytraveling brushes heretofore employed and in the variousdetails of construction and arrangement of parts, as hereinafterdescribed, shown in the accompanying drawings, and specifically pointedout in the claim.

In the accompanying drawings, Figure 1 is a side elevation of aseed-cleaning device, partly broken away to show the screens andtraveling brushes in their relative positions therein. Fig. 2 is anenlarged transverse section through one of the screens, showing theposition of one of the brushes and the longitudinal bars of the screen.`Fig. 3 is an end elevation of a brush, showing a portion of supportingsprocket-chain and the driving sprocket-wheel therefor. Fig. 4 is anenlarged View of the end of one of the brushes, showing thesprocket-chain in section. Fig. 5 is a perspective view of the bottom ofone of the screens. Fig. 6 is a perspective View of one of the brushes.

In the views. 1 and 2 are the screens resting in grooves in thereciprocating shoe 3.

A 4 are transverse bars for these screens, and 5 5 are longitudinal barswhich strengthen and stiften the screens.

6 is the perforated plate forming the screen.

7 7 are sprocket-wheels over which pass endinto the openings, as a, Fig.3, in theinelined less chains 8, upon which lthe brushes 9 are securedat regular intervals. These chains are made to follow the incline ofeach screen and are strictly parallel therewith. They move from thelower end of each screen over the lower surface thereof` and pass to theupper end, thus removing any matters which have lodged in the holes I0of the screen.

Shafts 11 serve to support the sprockets 7 7,

and the shafts are driven by means of bands 12 (shown in dotted lines)on the outside of the machine, which pass over pulleys 14 on the mainshaft I5 of the machine. Where the brushes would, if continuous, engagewith the longitudinal bars 5 of the screens, they are cut away, as atI3, but are adapted to make close contact with the surface of the screenwherever exposed.

The advantages of this method of cleansing the openings inthe screensfrom matters deposited therein is as follows: Heretofore travelingbrushes have acted transversely across the surfaces of the screens.Particles of refuse material or grain, however, falling screens willlodge against the lower edges of the openings, and hence the use of abrush transversely across the surface of the screen will have verylittle efliciency in removing the same if tightly lodged; but a brushacting longitudinally of the screen and brushing' upwardly over thesurface will act upon the particles at the very parts which are lodgedand in the direction from which they entered the holes. Thus they canreadily be removed.

In Fig. 3 is shown a device whereby the brushes 9 can be raised tooffset their reduction in length from wear upon the screen G. Thisdevice is exceedingly simple and efficient and comprises a bar 15underneath the upper side of the brush-conveyer, upon which theparticular links which support the brushes travel. These bars areadjustably supported upon the sides of the shoe 3 by means of pins orbolts 17, which pass through diagonal slots 18 in the bars. As many ofthese pins and slots are employed as may be deemed necessary to supportthe brushes. A knob 19 in one end of the bar 16 is used as a handle tomove it longitudinally on the pins, the sides IOO I O Patent, is*

The combination with the shoe and screen of a seed-cleaning machine, ofendless-chain conveyers mounted longitudinally oi the screensthereunder, transverse brushes upon links of said conveyer, a heel atthe rear end ot' each of such links, bars underneath the upper side ofeach conveyer upon which said heels are arranged to travel and pins inthe sides ofthe said shoe, and diagonal slots in the said bars throughwhich said pins pass, whereby vertical adjustment is given to the saidbars, substantially as described.

In testimony whereof I hereunto set 7my hand this 18th day of July,1904.

JONATHAN HARRIS. Witnesses:

Guo. S. COLE, IVM. M. MONROE.

